US Bridges

NC906 over Montgomery Slough

Good

Brunswick County, North Carolina · 0.2 MI.S.JCT.SR1190 · Structure no. 000000000190206

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
167 ft
3 main spans
Daily traffic
3,600
2022 count
Owner
State
State Highway Agency

About this bridge

NC906 over Montgomery Slough is a prestressed concrete slab carrying NC906 over Montgomery Slough in Brunswick County, North Carolina. It was built in 2008, so it is 17 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,600 vehicles a day, roughly 7% of them trucks, projected to reach 7,200 by 2040. The structure is 167 ft (50.9 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNC906
CrossesMontgomery Slough
Location0.2 MI.S.JCT.SR1190
RouteState Highway 906
CountyBrunswick County
StateNorth Carolina
Coordinates33.91768, -78.16098
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating40.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3 (+2 approach)
Design loadHS 25 or greater
Structure length167 ft (50.9 m)
Longest span54 ft (16.4 m)
Deck width48 ft (14.6 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic7,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC906 over Montgomery Slough built?

It was built in 2008, making it 17 years old in 2025.

What condition is NC906 over Montgomery Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does NC906 over Montgomery Slough carry?

About 3,600 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is NC906 over Montgomery Slough?

The structure is 167 ft (50.9 m) long with a longest span of 54 ft (16.4 m) and a deck 48 ft wide.

Who owns NC906 over Montgomery Slough?

It is owned by the State Highway Agency.